public override IASTNode VisitTableFactor(SqlServerCommandParser.TableFactorContext context)
{
TableFactorSegment result = new TableFactorSegment();
if (null != context.subquery())
{
var subquery = (SelectCommand)Visit(context.subquery());
var subquerySegment = new SubQuerySegment(context.subquery().Start.StartIndex, context.subquery().Stop.StopIndex, subquery);
var subqueryTableSegment = new SubQueryTableSegment(subquerySegment);
if (null != context.alias())
{
subqueryTableSegment.SetAlias((AliasSegment)Visit(context.alias()));
}
result.SetTable(subqueryTableSegment);
}
if (null != context.tableName())
{
SimpleTableSegment table = (SimpleTableSegment)Visit(context.tableName());
if (null != context.alias())
{
table.SetAlias((AliasSegment)Visit(context.alias()));
}
result.SetTable(table);
}
if (null != context.tableReferences())
{
var tableReferences = (CollectionValue <TableReferenceSegment>)Visit(context.tableReferences());
result.TableReferences.AddAll(tableReferences.GetValue());
}
return(result);
}
public override IASTNode VisitSingleTableClause(SqlServerCommandParser.SingleTableClauseContext context)
{
SimpleTableSegment result = (SimpleTableSegment)Visit(context.tableName());
if (null != context.alias())
{
result.SetAlias((AliasSegment)Visit(context.alias()));
}
return(result);
}
private bool IsSameProjection(ShorthandProjection shorthandProjection, ColumnOrderByItemSegment orderItem, SelectCommand selectCommand)
{
if (shorthandProjection.GetOwner() == null)
{
throw new ShardingException("shorthandProjection can not found owner");
}
SimpleTableSegment tableSegment = Find(shorthandProjection.GetOwner(), selectCommand);
return(_schemaMetaData.ContainsColumn(tableSegment.GetTableName().GetIdentifier().GetValue(), orderItem.GetColumn().GetIdentifier().GetValue()));
}
private bool IsTable(SimpleTableSegment owner, ICollection <SimpleTableSegment> tableSegments)
{
foreach (var simpleTableSegment in tableSegments)
{
if (owner.GetTableName().GetIdentifier().GetValue().Equals(simpleTableSegment.GetAlias()))
{
return(false);
}
}
return(true);
}
public override IASTNode VisitTableName(MySqlCommandParser.TableNameContext ctx)
{
SimpleTableSegment result = new SimpleTableSegment(new TableNameSegment(ctx.Start.StartIndex, ctx.Stop.StopIndex, (IdentifierValue)Visit(ctx.name())));
MySqlCommandParser.OwnerContext owner = ctx.owner();
if (null != owner)
{
result.SetOwner(new OwnerSegment(owner.Start.StartIndex, owner.Stop.StopIndex, (IdentifierValue)Visit(owner.identifier())));
}
return(result);
}
private ShorthandProjection FindShorthandProjection(ICollection <IProjection> projections, string tableNameOrAlias, SelectCommand selectCommand)
{
SimpleTableSegment tableSegment = Find(tableNameOrAlias, selectCommand);
foreach (var projection in projections)
{
if (!(projection is ShorthandProjection))
{
continue;
}
ShorthandProjection shorthandProjection = (ShorthandProjection)projection;
if (shorthandProjection.GetOwner() != null && Find(
shorthandProjection.GetOwner(), selectCommand).GetTableName().GetIdentifier().GetValue().Equals(tableSegment.GetTableName().GetIdentifier().GetValue(), StringComparison.OrdinalIgnoreCase))
{
return(shorthandProjection);
}
}
return(null);
}
public void SetTable(SimpleTableSegment table)
{
this.table = table;
}
public TablesContext(SimpleTableSegment tableSegment) : this(new List <SimpleTableSegment>(1) { tableSegment })
{
}
public CreateTableCommand(SimpleTableSegment table)
{
Table = table;
}
public AlterTableCommand(SimpleTableSegment table)
{
Table = table;
}
